Camera optical lens

ABSTRACT

The present disclosure discloses a camera optical lens. The camera optical lens including, in an order from an object side to an image side, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens. The camera optical lens further satisfies specific conditions.

FIELD OF THE PRESENT DISCLOSURE

The present disclosure relates to optical lens, in particular to acamera optical lens suitable for handheld devices such as smart phonesand digital cameras and imaging devices.

DESCRIPTION OF RELATED ART

With the emergence of smart phones in recent years, the demand forminiature camera lens is increasing day by day, but the photosensitivedevices of general camera lens are no other than Charge Coupled Device(CCD) or Complementary metal-Oxide Semiconductor Sensor (CMOS sensor),and as the progress of the semiconductor manufacturing technology makesthe pixel size of the photosensitive devices shrink, coupled with thecurrent development trend of electronic products being that theirfunctions should be better and their shape should be thin and small,miniature camera lens with good imaging quality therefor has become amainstream in the market. In order to obtain better imaging quality, thelens that is traditionally equipped in mobile phone cameras adopts athree-piece or four-piece lens structure. And, with the development oftechnology and the increase of the diverse demands of users, and underthis circumstances that the pixel area of photosensitive devices isshrinking steadily and the requirement of the system for the imagingquality is improving constantly, the five-piece, six-piece andseven-piece lens structure gradually appear in lens design. There is anurgent need for ultra-thin wide-angle camera lenses which have goodoptical characteristics and the chromatic aberration of which is fullycorrected.

BRIEF DESCRIPTION OF THE DRAWINGS

Many aspects of the exemplary embodiments can be better understood withreference to the following drawings. The components in the drawing arenot necessarily drawn to scale, the emphasis instead being placed uponclearly illustrating the principles of the present disclosure.

FIG. 1 is a schematic diagram of a camera optical lens in accordancewith a first embodiment of the present invention;

FIG. 2 shows the longitudinal aberration of the camera optical lensshown in FIG. 1;

FIG. 3 shows the lateral color of the camera optical lens shown in FIG.1;

FIG. 4 presents a schematic diagram of the field curvature anddistortion of the camera optical lens shown in FIG. 1;

FIG. 5 is a schematic diagram of a camera optical lens in accordancewith a second embodiment of the present invention;

FIG. 6 presents the longitudinal aberration of the camera optical lensshown in FIG. 5;

FIG. 7 presents the lateral color of the camera optical lens shown inFIG. 5;

FIG. 8 presents the field curvature and distortion of the camera opticallens shown in FIG. 5;

FIG. 9 is a schematic diagram of the camera optical lens in the thirdembodiment of the present invention;

FIG. 10 is a schematic diagram of the longitudinal aberration of thecamera optical lens shown in FIG. 9;

FIG. 11 is a schematic diagram of the lateral color of the cameraoptical lens shown in FIG. 9;

FIG. 12 is a schematic diagram of the field curvature and distortion ofthe camera optical lens shown in FIG. 9

DETAILED DESCRIPTION OF THE EXEMPLARY EMBODIMENTS

The present disclosure will hereinafter be described in detail withreference to several exemplary embodiments. To make the technicalproblems to be solved, technical solutions and beneficial effects of thepresent disclosure more apparent, the present disclosure is described infurther detail together with the figure and the embodiments. It shouldbe understood the specific embodiments described hereby is only toexplain the disclosure, not intended to limit the disclosure.

Embodiment 1

As referring to FIG. 1, the present invention provides a camera opticallens 10. FIG. 1 shows the camera optical lens 10 of embodiment 1 of thepresent invention, the camera optical lens 10 comprises 7 lenses.Specifically, from the object side to the image side, the camera opticallens 10 comprises in sequence: an aperture S1, a first lens L1, a secondlens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixthlens L6 and a seventh lens L7. Optical element like optical filter GFcan be arranged between the seventh lens L7 and the image surface Si.The first lens L1 is made of plastic material, the second lens L2 ismade of plastic material, the third lens L3 is made of plastic material,the fourth lens L4 is made of glass material, the fifth lens L5 is madeof plastic material, the sixth lens L6 is made of plastic material, theseventh lens L7 is made of plastic material;

Here, the focal length of the whole camera optical lens 10 is defined asf, the focal length of the first lens L1 is defined as f1, the curvatureradius of the object side surface of the first lens L1 is defined as R1,the curvature radius of the image side surface of the first lens L1 isdefined as R2, the refractive power of the fourth lens L4 is defined asn4, the thickness on axis of the fourth lens L4 is defined as d7, thefocal length of the sixth lens is L6 defined as f6, the focal length ofthe seventh lens L7 is defined as f7, the total optical length of thecamera optical lens 10 is defined as TLL. The camera optical lens 10satisfies the following conditions: −3≤f1/f≤−1, 1.7≤n4≤2.2, 1≤f6/f7≤10;1.2≤(R1+R2)/(R1−R2)≤10; 0.01≤d7/TTL≤0.2.

Condition −3≤f1/f≤−1 fixes the negative refractive power of the firstlens L1. If the upper limit of the set value is exceeded, although itbenefits the ultra-thin development of lenses, but the negativerefractive power of the first lens L1 will be too strong, problem likeaberration is difficult to be corrected, and it is also unfavorable forwide-angle development of lens. On the contrary, if the lower limit ofthe set value is exceeded, the negative refractive power of the firstlens L1 becomes too weak, it is then difficult to develop ultra-thinlenses. Preferably, the following condition shall be satisfied,−3≤f1/f≤−1.5.

Condition 1.7≤n4≤2.2 fixes the refractive power of the fourth lens L4,refractive power within this range benefits the ultra-thin developmentof lenses, and it also benefits the correction of aberration.Preferably, the following condition shall be satisfied, 1.7≤n4≤2.0.

Condition 1≤f6/f7≤10 fixes the ratio between the focal length f6 of thesixth lens L6 and the focal length f7 of the seventh lens L7, a ratiowithin this range can effectively reduce the sensitivity of lens groupused in camera and further enhance the imaging quality. Preferably, thefollowing condition shall be satisfied, 2≤f6/f7≤10.

Condition 1.2≤(R1+R2)/(R1−R2)≤10 fixes the shape of the first lens L1,when the value is beyond this range, with the development into thedirection of ultra-thin and wide-angle lenses, problem like aberrationof the off-axis picture angle is difficult to be corrected. Preferably,the condition 1.2≤(R1+R2)/(R1−R2)≤8 shall be satisfied.

Condition 0.01≤d7/TTL≤0.2 fixes the ratio between the thickness on-axisof the fourth lens L4 and the total optical length TTL of the cameraoptical lens 10, a ratio within this range benefits ultra-thindevelopment of lenses. Preferably, the following condition shall besatisfied, 0.01≤d7/TTL≤0.15.

When the focal length of the camera optical lens 10 of the presentinvention, the focal length of each lens, the refractive power of therelated lens, and the total optical length, the thickness on-axis andthe curvature radius of the camera optical lens satisfy the aboveconditions, the camera optical lens 10 has the advantage of highperformance and satisfies the design requirement of low TTL.

In this embodiment, the object side surface of the first lens L1 is aconvex surface relative to the proximal axis, its image side surface isa concave surface relative to the proximal axis, and it has negativerefractive power; the thickness on axis of the first lens L1 is d1, theysatisfy the following condition: 0.09≤d1≤0.27, it is beneficial forultra-thin development. Preferably, the condition 0.14≤d1≤0.22 shall besatisfied.

In this embodiment, the object side surface of the second lens L2 is aconvex surface relative to the proximal axis, its image side surface isa convex surface relative to the proximal axis, and it has positiverefractive power; the focal length of the whole camera optical lens 10is f, the focal length of the second lens L2 is f2, the curvature radiusof the object side surface of the second lens L2 is R3, the curvatureradius of image side surface of the second lens L2 is R4 and thethickness on-axis of the second lens L2 is d3, they satisfy thefollowing condition: 0.51≤f2/f≤2.35, when the condition is met, thepositive refractive power of the second lens L2 is controlled withinreasonable scope, the spherical aberration caused by the first lens L1which has negative refractive power and the field curvature of thesystem then can be reasonably and effectively balanced; the condition−2.18≤(R3+R4)/(R3−R4)≤−0.40 fixes the shape of the second lens L2, whenvalue is beyond this range, with the development into the direction ofultra-thin and wide-angle lenses, problem like on-axis chromaticaberration is difficult to be corrected; if the condition 0.27≤d3≤0.95is met, it is beneficial for the realization of ultra-thin lenses.Preferably, the following conditions shall be satisfied, 0.81≤f2/f≤1.88;−1.36≤(R3+R4)/(R3−R4)≤−0.50; 0.43≤d3≤0.76.

In this embodiment, the image side surface of the third lens L3 is aconcave surface relative to the proximal axis, and it has refractivepower; the focal length of the whole camera optical lens 10 is f, thefocal length of the third lens L3 is f3, the curvature radius of theobject side surface of the third lens L3 is R5, the curvature radius ofthe image side surface of the third lens L3 is R6 and the thicknesson-axis of the third lens L3 is d5, they satisfy the condition:−12.37≤f3/f≤30.72, by meeting this condition, it is helpful for thesystem to obtain good ability in balancing the field curvature, so thatthe image quality can be effectively improved; by meeting the condition−126.42≤(R5+R6)/(R5−R6)≤1.48 the shape of the third lens L3 can beeffectively controlled, it is beneficial for the shaping of the thirdlens L3 and bad shaping and stress generation due to extra largecurvature of surface of the third lens L3 can be avoided; when thecondition 0.15≤d5≤0.46 is met, it is beneficial for the realization ofultra-thin lenses. Preferably, the following conditions shall besatisfied, −7.73≤f3/f≤24.51; −79.01≤(R5+R6)/(R5−R6)≤1.18; 0.24≤d5≤0.37.

In this embodiment, the object side surface of the fourth lens L4 is aconvex surface relative to the proximal axis, its image side surface isa concave surface relative to the proximal axis, and it has refractivepower; the focal length of the whole camera optical lens 10 is f, thefocal length of the fourth lens L4 is f4, the curvature radius of theobject side surface of the fourth lens L4 is R7, the curvature radius ofthe image side surface of the fourth lens L4 is R8 and the thicknesson-axis of the fourth lens L4 is d7, they satisfy the condition:−10.68≤f4/f≤35.71, the appropriate distribution of refractive powermakes it possible that the system has better imaging quality and lowersensitivity; the condition −276.57≤(R7+R8)/(R7−R8)≤8.2 fixes the shapeof the fourth lens L4, when beyond this range, with the development intothe direction of ultra-thin and wide-angle lens, the problem likechromatic aberration is difficult to be corrected; when the condition0.14≤d7≤0.77 is met, it is beneficial for realization of ultra-thinlenses. Preferably, the following conditions shall be satisfied,−6.68≤f4/f≤28.57; −172.86≤(R7+R8)/(R7−R8)≤6.56; 0.23d7≤0.62.

In this embodiment, the object side surface of the fifth lens L5 is aconcave surface relative to the proximal axis, its image side surface isa convex surface relative to the proximal axis, and it has positiverefractive power; the focal length of the whole camera optical lens 10is f, the focal length of the fifth lens L5 is f5, the curvature radiusof the object side surface of the fifth lens L5 is R9, the curvatureradius of the image side surface of the fifth lens L5 is R10 and thethickness on-axis of the fifth lens L5 is d9, they satisfy thecondition: 0.25≤f5/f≤0.87, the limitation on the fifth lens L5 caneffectively make the light angle of the camera lens flat and thetolerance sensitivity reduces; the condition 0.55 (R9+R10)/(R9−R10)≤2.08fixes the shape of the fifth lens L5, when beyond this range, with thedevelopment into the direction of ultra-thin and wide-angle lens, theproblem like off-axis chromatic aberration is difficult to be corrected;when the condition 0.52≤d9≤1.57 is met, it is beneficial for therealization of ultra-thin lens. Preferably, the following conditionsshall be satisfied, 0.40≤f5/f≤0.69; 0.88≤(R9+R10)/(R9−R10)≤1.66;0.84≤d9≤1.26.

In this embodiment, the object side surface of the sixth lens L6 is aconvex surface relative to the proximal axis, its image side surface isa concave surface relative to the proximal axis, and it has negativerefractive power; the focal length of the whole camera optical lens 10is f, the focal length of the sixth lens L6 is f6, the curvature radiusof the object side surface of the sixth lens L6 is R11, the curvatureradius of the image side surface of the sixth lens L6 is R12 and thethickness on-axis of the sixth lens L6 is d11, they satisfy thecondition: −13.76≤f6/f≤−2.37, the appropriate distribution of refractivepower makes it possible that the system has better imaging quality andlower sensitivity; the condition 1.38≤(R11+R12)/(R11−R12)≤7.31 fixes theshape of the sixth lens L6, when beyond this range, with the developmentinto the direction of ultra-thin and wide-angle lenses, the problem likeoff-axis chromatic aberration is difficult to be corrected; when thecondition 0.11≤d11≤0.77, is met, it is beneficial for the realization ofultra-thin lens. Preferably, the following conditions shall besatisfied, −8.60≤f6/f≤−2.97; 2.20≤(R11+R12)/(R11−R12)≤5.85;0.16≤d11≤0.62.

In this embodiment, the object side surface of the seventh lens L7 is aconvex surface relative to the proximal axis, its image side surface isa concave surface relative to the proximal axis, and it has negativerefractive power; the focal length of the whole camera optical lens 10is f, the curvature radius of the object side surface of the seventhlens L7 is R13, the curvature radius of the image side surface of theseventh lens L7 is R14, the focal length of the seventh lens L7 is f7,and the thickness on-axis of the seventh lens L7 is d13, they satisfythe condition: 0.79≤(R13+R14)/(R13−R14)≤2.72, which fixes the shape ofthe seventh lens L7, when beyond this range, with the development intothe direction of ultra-thin and wide-angle lenses, the problem likeoff-axis chromatic aberration is difficult to be corrected;−1.78≤f7/f≤−0.46, the appropriate distribution of refractive power makesit possible that the system has better imaging quality and lowersensitivity; when the condition 0.19≤d11≤0.85 is met, it is beneficialfor the realization of ultra-thin lens. Preferably, the followingconditions shall be satisfied, −1.11≤f7/f≤−0.57; 0.30≤d13≤0.68;1.26≤(R13+R14)/(R13−R14)≤2.17.

In this embodiment, the total optical length TTL of the camera opticallens 10 is less than or equal to 6.32 mm, it is beneficial for therealization of ultra-thin lenses. Preferably, the total optical lengthTTL of the camera optical lens 10 is less than or equal to 6.03.

In this embodiment, the aperture F number of the camera optical lens 10is less than or equal to 2.14. A large aperture has better imagingperformance. Preferably, the aperture F number of the camera opticallens 10 is less than or equal to 2.09.

With such design, the total optical length TTL of the whole cameraoptical lens 10 can be made as short as possible, thus theminiaturization characteristics can be maintained.

In the following, an example will be used to describe the camera opticallens 10 of the present invention. The symbols recorded in each exampleare as follows. The unit of distance, radius and center thickness is mm.

TTL: Optical length (the distance on-axis from the object side surfaceto the image surface of the first lens L1).

Preferably, inflexion points and/or arrest points can also be arrangedon the object side surface and/or image side surface of the lens, sothat the demand for high quality imaging can be satisfied, thedescription below can be referred for specific implementable scheme.

The design information of the camera optical lens 10 in the firstembodiment of the present invention is shown in the following, the unitof the focal length, distance, radius and center thickness is mm.

The design information of the camera optical lens 10 in the firstembodiment of the present invention is shown in the tables 1 and 2.

TABLE 1 R d nd v d S1 ∞ d0 = −0.076 R1 1.517 d1 = 0.180 nd1 1.6713 v 119.24 R2 1.158 d2 = 0.350 R3 4.055 d3 = 0.636 nd2 1.5445 v 2 55.99 R4−25.640 d4 = 0.030 R5 −2710.177 d5 = 0.304 nd3 1.6713 v 3 19.24 R617.380 d6 = 0.219 R7 4.454 d7 = 0.516 nd4 1.7225 v 4 29.23 R8 4.519 d8 =0.351 R9 −21.305 d9 = 1.049 nd5 1.5352 v 5 56.12 R10 −1.062 d10 = 0.020R11 7.382 d11 = 0.444 nd6 1.5352 v 6 56.12 R12 4.867 d12 = 0.100 R134.031 d13 = 0.393 nd7 1.5352 v 7 56.12 R14 1.068 d14 = 1.154 R15 ∞ d15 =0.210 ndg 1.5168 v g 64.17 R16 ∞ d16 = 1.094

In which, the meaning of the various symbols is as follows.

S1: Aperture;

R: The curvature radius of the optical surface, the central curvatureradius in case of lens;

R1: The curvature radius of the object side surface of the first lensL1;

R2: The curvature radius of the image side surface of the first lens L1;

R3: The curvature radius of the object side surface of the second lensL2;

R4: The curvature radius of the image side surface of the second lensL2;

R5: The curvature radius of the object side surface of the third lensL3;

R6: The curvature radius of the image side surface of the third lens L3;

R7: The curvature radius of the object side surface of the fourth lensL4;

R8: The curvature radius of the image side surface of the fourth lensL4;

R9: The curvature radius of the object side surface of the fifth lensL5;

R10: The curvature radius of the image side surface of the fifth lensL5;

R11: The curvature radius of the object side surface of the sixth lensL6;

R12: The curvature radius of the image side surface of the sixth lensL6;

R13: The curvature radius of the object side surface of the seventh lensL7;

R14: The curvature radius of the image side surface of the seventh lensL7;

R15: The curvature radius of the object side surface of the opticalfilter GF;

R16: The curvature radius of the image side surface of the opticalfilter GF;

d: The thickness on-axis of the lens and the distance on-axis betweenthe lens;

d0: The distance on-axis from aperture S1 to the object side surface ofthe first lens L1;

d1: The thickness on-axis of the first lens 11;

d2: The distance on-axis from the image side surface of the first lensL1 to the object side surface of the second lens L2;

d3: The thickness on-axis of the second lens L2;

d4: The distance on-axis from the image side surface of the second lensL2 to the object side surface of the third lens L3;

d5: The thickness on-axis of the third lens L3;

d6: The distance on-axis from the image side surface of the third lensL3 to the object side surface of the fourth lens L4;

d7: The thickness on-axis of the fourth lens L4;

d8: The distance on-axis from the image side surface of the fourth lensL4 to the object side surface of the fifth lens L5;

d9: The thickness on-axis of the fifth lens L5;

d10: The distance on-axis from the image side surface of the fifth lensL5 to the object side surface of the sixth lens L6;

d11: The thickness on-axis of the sixth lens L6;

d12: The distance on-axis from the image side surface of the sixth lensL6 to the object side surface of the seventh lens L7;

d13: The thickness on-axis of the seventh lens L7;

d14: The distance on-axis from the image side surface of the seventhlens L7 to the object side surface of the optical filter GF;

d15: The thickness on-axis of the optical filter GF;

d16: The distance on-axis from the image side surface to the imagesurface of the optical filter GF;

nd: The refractive power of the d line;

nd1: The refractive power of the d line of the first lens L1;

nd2: The refractive power of the d line of the second lens L2;

nd3: The refractive power of the d line of the third lens L3;

nd4: The refractive power of the d line of the fourth lens L4;

nd5: The refractive power of the d line of the fifth lens L5;

nd6: The refractive power of the d line of the sixth lens L6;

nd7: The refractive power of the d line of the seventh lens L7;

ndg: The refractive power of the d line of the optical filter GF;

vd: The abbe number;

v1: The abbe number of the first lens L1;

v2: The abbe number of the second lens L2;

v3: The abbe number of the third lens L3;

v4: The abbe number of the fourth lens L4;

v5: The abbe number of the fifth lens L5;

v6: The abbe number of the sixth lens L6;

v7: The abbe number of the seventh lens L7;

vg: The abbe number of the optical filter GF;

Table 2 shows the aspherical surface data of the camera optical lens 10in the embodiment 1 of the present invention.

TABLE 2 Conic Index Aspherical Surface Index k     A4 A6   A8   A10  A12   A14   A16 R1 −3.0115E+00 −3.6662E−02 −1.2144E−02 1.8859E−027.9201E−03 −1.0995E−02 6.0507E−03 R2 −2.4525E+00 −2.1603E−02 −1.7132E−032.3790E−03 3.9128E−03 −4.0477E−03 6.9205E−03 R3 −2.3123E+01 −3.0310E−02−2.9729E−02 −3.5745E−02 −7.4248E−03 9.4980E−03 −2.1026E−02 R4 3.7931E+02−1.0309E−01 −3.3532E−02 −8.7527E−03 2.6046E−03 2.9984E−03 −3.2301E−03−1.5950E−04 R5 0.0000E+00 −1.8712E−03 −2.8701E−03 −4.2720E−03−5.6109E−03 3.2986E−03 1.9965E−03 −2.4381E−03 R6 0.0000E+00 −1.6512E−021.0057E−02 4.1843E−03 −8.2499E−04 −4.0696E−03 1.6427E−04 −2.0726E−04 R7−2.7655E+00 −1.0962E−01 −1.3875E−02 −3.5138E−03 7.1845E−03 3.8842E−03−1.3310E−04 −1.6879E−03 R8 5.3482E+00 −6.2397E−02 −8.8464E−03−2.9626E−04 −4.7198E−04 −9.1074E−05 R9 6.3733E+01 −3.0525E−03 1.6544E−02−7.7245E−03 −2.3096E−04 3.7475E−04 R10 −3.0812E+00 −6.2927E−021.7469E−02 −2.1724E−03 8.0568E−04 R11 7.8478E+00 −1.6933E−02 2.1172E−033.1284E−04 −8.9858E−05 R12 −5.1357E−01 −1.2144E−03 −1.0034E−04−1.2978E−04 1.0245E−05 R13 −2.6744E+00 −2.3557E−03 −4.8836E−041.6054E−06 −2.6250E−05 R14 −4.4070E+00 −5.7214E−03 2.1492E−03−2.5986E−04 3.6474E−09

Among them, K is a conic index, A4, A6, A8, A10, A12, A14, A16 areaspheric surface indexes.

IH: Image heighty=(x ² /R)/[1+{1−(k+1)(x ² /R ²)}^(1/2)]+A4x ⁴ +A6x ⁶ +A8x ⁸ +A10x ¹⁰+A12x ¹² +A14x ¹⁴ +A16x ¹⁶  (1)

For convenience, the aspheric surface of each lens surface uses theaspheric surfaces shown in the above condition (1). However, the presentinvention is not limited to the aspherical polynomials form shown in thecondition (1).

Table 3 and table 4 show the inflexion points and the arrest pointdesign data of the camera optical lens 10 lens in embodiment 1 of thepresent invention. In which, R1 and R2 represent respectively the objectside surface and image side surface of the first lens L1, R3 and R4represent respectively the object side surface and image side surface ofthe second lens L2, R5 and R6 represent respectively the object sidesurface and image side surface of the third lens L3, R7 and R8 representrespectively the object side surface and image side surface of thefourth lens L4, R9 and R10 represent respectively the object sidesurface and image side surface of the fifth lens L5, R11 and R12represent respectively the object side surface and image side surface ofthe sixth lens L6, R13 and R14 represent respectively the object sidesurface and image side surface of the seventh lens L7. The data in thecolumn named “inflexion point position” are the vertical distances fromthe inflexion points arranged on each lens surface to the optic axis ofthe camera optical lens 10. The data in the column named “arrest pointposition” are the vertical distances from the arrest points arranged oneach lens surface to the optic axis of the camera optical lens 10.

TABLE 3 Inflexion point number Inflexion point position 1 R1 0 R2 0 R3 10.495 R4 0 R5 0 R6 1 0.905 R7 1 0.405 R8 1 0.565 R9 1 1.275 R10 0 R11 11.815 R12 1 1.485 R13 1 1.775 R14 0

TABLE 4 Arrest point number Arrest point position 1 R1 R2 R3 1 0.755 R4R5 R6 1 1.065 R7 1 0.685 R8 1 0.925 R9 R10 R11 R12 R13 R14

FIG. 2 and FIG. 3 show the longitudinal aberration and lateral colorschematic diagrams after light with a wavelength of 470 nm, 555 nm and650 nm passes the camera optical lens 10 in the first embodiment. FIG. 4shows the field curvature and distortion schematic diagrams after lightwith a wavelength of 555 nm passes the camera optical lens 10 in thefirst embodiment, the field curvature S in FIG. 4 is a field curvaturein the sagittal direction, T is a field curvature in the meridiandirection.

Table 13 shows the various values of the examples 1, 2, 3 and the valuescorresponding with the parameters which are already specified in theconditions.

As shown in Table 13, the first embodiment satisfies the variousconditions.

In this embodiment, the pupil entering diameter of the camera opticallens is 1.988 m, the full vision field image height is 2.9935 mm, thevision field angle in the diagonal direction is 74.99°, it haswide-angle and is ultra-thin, its on-axis and off-axis chromaticaberrations are fully corrected, and it has excellent opticalcharacteristics.

Embodiment 2

Embodiment 2 is basically the same as embodiment 1, the meaning of itssymbols is the same as that of embodiment 1, in the following, only thedifferences are described.

Table 5 and table 6 show the design data of the camera optical lens 20in embodiment 2 of the present invention.

TABLE 5 R d nd vd S1 ∞ d0 = −0.076 R1 3.814 dl = 0.180 nd1 1.6713 v119.24 R2 2.548 d2 = 0.102 R3 3.231 d3 = 0.575 nd2 1.5445 v2 55.99 R4−13.125 d4 = 0.030 R5 3.547 d5 = 0.304 nd3 1.6713 v3 19.24 R6 3.661 d6 =0.492 R7 10.141 d7 = 0.480 nd4 1.8211 v4 24.06 R8 4.782 d8 = 0.351 R9−9.873 d9 = 1.049 nd5 1.5352 v5 56.12 R10 −1.039 d10 = 0.020 R11 7.670d11 = 0.516 nd6 1.5352 v6 56.12 R12 4.852 d12 = 0.100 R13 4.967 d13 =0.374 nd7 1.5352 v7 56.12 R14 1.113 d14 = 1.154 R15 ∞ d15 = 0.210 ndg1.5168 vg 64.17 R16 ∞ d16 = 0.366

Table 6 shows the aspherical surface data of each lens of the cameraoptical lens 20 in embodiment 2 of the present invention.

TABLE 6 Conic Index Aspherical Surface Index k    A4   A6   A8   A10  A12   A14   A16 R1 −1.3838E−01 −2.4334E−02 −1.0112E−02 6.5882E−035.1170E−03 −7.1469E−03 3.1132E−03 R2 −1.4308E+00 −1.1193E−02 −2.6884E−033.2625E−03 1.1245E−03 −2.7368E−03 6.5571E−03 R3 −4.5519E+00 −1.2242E−02−1.6413E−02 −1.9836E−02 −4.9202E−03 6.3946E−03 −6.7241E−03 R4 1.3436E+02−6.1214E−02 −1.8112E−02 −5.6247E−03 −1.2121E−03 8.8777E−04 −2.5403E−03−6.9736E−05 R5 0.0000E+00 −6.7295E−04 7.7707E−03 3.2124E−03 −4.8276E−031.7701E−05 1.7295E−04 −3.6178E−04 R6 0.0000E+00 −2.5531E−04 1.3829E−023.8320E−03 −1.9903E−03 −3.9229E−03 3.0958E−04 −7.4762E−04 R7 1.8510E+01−1.0623E−01 −9.8341E−03 −1.0104E−02 5.7514E−03 5.7401E−03 8.0081E−04−2.4575E−03 R8 8.3725E+00 −7.1548E−02 −6.3801E−03 2.3486E−04 −6.5661E−04−1.0261E−04 R9 −9.7497E+00 2.5138E−03 1.5547E−02 −8.0683E−03 −2.7868E−044.1459E−04 R10 −2.9260E+00 −6.8875E−02 1.9016E−02 −1.6612E−03 6.1005E−04R11 8.4763E+00 −2.2947E−02 1.4749E−03 7.4614E−05 −1.5525E−05 R12−7.4109E−01 −1.4252E−03 −4.5696E−05 −1.0021E−05 −1.4600E−06 R13−6.5181E−01 2.7737E−04 −2.0086E−04 −1.2266E−05 8.8248E−07 R14−4.7637E+00 −9.8315E−03 1.9717E−03 −2.1111E−04 7.7554E−06

Table 7 and table 8 show the inflexion points and the arrest pointdesign data of the camera optical lens 20 lens in embodiment 2 of thepresent invention.

TABLE 7 Inflexion Inflexion Inflexion point number point position 1point position 2 R1 0 R2 0 R3 1 0.665 R4 0 R5 1 1.075 R6 1 1.025 R7 10.285 R8 2 0.525 1.455 R9 3 0.805 0.955 R10 1 1.275 R11 2 0.795 1.875R12 1 2.155 R13 1 2.415 R14 1 1.165

TABLE 8 Arrest point number Arrest point position 1 R1 R2 R3 1 0.945 R4R5 R6 1 1.215 R7 1 0.475 R8 1 0.895 R9 R10 1 1.745 R11 2 1.555 R12 R13R14

FIG. 6 and FIG. 7 show the longitudinal aberration and lateral colorschematic diagrams after light with a wavelength of 470 nm, 555 nm and650 nm passes the camera optical lens 20 in the second embodiment. FIG.8 shows the field curvature and distortion schematic diagrams afterlight with a wavelength of 555 nm passes the camera optical lens 20 inthe second embodiment.

As shown in Table 13, the second embodiment satisfies the variousconditions.

In this embodiment, the pupil entering diameter of the camera opticallens is 1.927 mm, the full vision field image height is 2.9935 mm, thevision field angle in the diagonal direction is 74.99°, it haswide-angle and is ultra-thin, its on-axis and off-axis chromaticaberrations are fully corrected, and it has excellent opticalcharacteristics.

Embodiment 3

Embodiment 3 is basically the same as embodiment 1, the meaning of itssymbols is the same as that of embodiment 1, in the following, only thedifferences are described.

The design information of the camera optical lens 30 in the thirdembodiment of the present invention is shown in the tables 9 and 10.

TABLE 9 R d nd v d S1 ∞ d0 = 0.010 R1 40.038 d1 = 0.180 nd1 1.6713 v 119.24 R2 3.640 d2 = 0.130 R3 2.131 d3 = 0.532 nd2 1.5445 v 2 55.99 R450.391 d4 = 0.080 R5 1.820 d5 = 0.304 nd3 1.6713 v 3 19.24 R6 2.081 d6 =0.763 R7 6.535 d7 = 0.289 nd4 1.7225 v 4 29.23 R8 4.514 d8 = 0.128 R9−6.821 d9 = 1.049 nd5 1.5352 v 5 56.12 R10 −1.105 d10 = 0.020 R11 8.589d11 = 0.220 nd6 1.5352 v 6 56.12 R12 4.009 d12 = 0.100 R13 4.42E+00 d13= 0.567 nd7 1.5352 v 7 56.12 R14 1.27E+00 d14 = 1.000 R15 ∞ d15 = 0.210ndg 1.5168 v g 64.17 R16 ∞ d16 = 0.516

Table 10 shows the aspherical surface data of each lens of the cameraoptical lens 30 in embodiment 3 of the present invention.

TABLE 10 Conic Index Aspherical Surface Index k    A4   A6   A8   A10  A12   A14   A16   R1 0.0000E+00 −1.3281E−02 3.4807E−03 6.1650E−035.9690E−03 −7.6902E−03 1.2037E−03 R2 −7.8639E+00 −1.8161E−02 1.9201E−021.3742E−02 1.9499E−03 −8.6581E−03 1.6845E−03 R3 −1.8561E+00 −1.8692E−03−6.8987E−03 −6.4127E−03 2.5137E−03 8.4057E−03 −8.4857E−03 R4 0.0000E+00−4.1300E−02 −1.3342E−02 −4.8715E−03 −2.2059E−03 7.5707E−03 −1.1926E−03−2.6979E−03 R5 0.0000E+00 −1.7438E−02 5.3765E−03 −5.4502E−03 −2.3269E−036.4797E−03 2.6975E−03 −1.6643E−03 R6 0.0000E+00 2.8590E−02 −2.0293E−03−2.2436E−04 3.1307E−03 −9.9425E−05 4.5890E−03 1.5677E−03 R7 1.2847E+01−1.0794E−01 −8.0017E−04 −2.2412E−02 1.2554E−02 6.3529E−03 −2.3332E−033.1032E−05 R8 6.6934E+00 −7.3472E−02 −4.5483E−03 3.1123E−03 6.0188E−04−1.0933E−04 R9 −1.1229E+01 1.1009E−02 1.6927E−02 −9.2068E−03 −4.5921E−046.6563E−04 R10 −3.3717E+00 −6.4659E−02 1.6487E−02 −2.2915E−03 5.1930E−04R11 8.3651E+00 −2.4249E−02 1.6927E−03 1.2439E−04 −3.4710E−06 R12−1.3905E+00 −2.5302E−03 −2.4332E−04 −2.7257E−05 −3.1891E−06 R13−7.7661E−01 −8.6474E−04 −1.8554E−04 −1.3259E−05 −3.4809E−07 R14−6.1580E+00 −1.0126E−02 1.9233E−03 −2.0221E−04 9.2814E−06

Table 11 and table 12 show the inflexion points and the arrest pointdesign data of the camera optical lens 30 lens in embodiment 3 of thepresent invention.

TABLE 11 Inflexion Inflexion Inflexion point number point position 1point position 2 R1 2 0.465 0.595 R2 0 R3 1 0.935 R4 1 0.205 R5 0 R6 0R7 2 0.355 1.125 R8 2 0.545 1.255 R9 3 0.705 1.155 R10 1 1.395 R11 0.7051.755 R12 1 1.745 R13 1 2.135 R14 2 1.075 2.475

TABLE 12 Arrest point number Arrest point position 1 R1 R2 R3 R4 1 0.335R5 R6 R7 1 0.605 R8 2 0.965 R9 R10 R11 1.305 R12 R13 R14

FIG. 10 and FIG. 11 show the longitudinal aberration and lateral colorschematic diagrams after light with a wavelength of 470 nm, 555 nm and650 nm passes the camera optical lens 30 in the third embodiment. FIG.12 shows the field curvature and distortion schematic diagrams afterlight with a wavelength of 555 nm passes the camera optical lens 30 inthe third embodiment.

The following table 13, in accordance with the above conditions, liststhe values in this embodiment corresponding with each conditionexpression. Apparently, the camera optical system of this embodimentsatisfies the above conditions.

In this embodiment, the pupil entering diameter of the camera opticallens is 1.9511 mm, the full vision field image height is 2.9935 mm, thevision field angle in the diagonal direction is 75.00°, it haswide-angle and is ultra-thin, its on-axis and off-axis chromaticaberrations are fully corrected, and it has excellent opticalcharacteristics.

TABLE 13 Embodiment Embodiment Embodiment 1 2 3 f 4.121 3.950 4.000 f1−9.066 −12.014 −5.921 f2 6.458 4.806 4.058 f3 −25.486 80.900 14.562 f498.099 −11.402 −21.364 f5 2.044 2.076 2.308 f6 −28.358 −26.278 −14.237f7 −2.836 −2.766 −3.562 f6/f7 10.000 9.500 3.997 (R1 + R2)/(R1 − R2)7.458 5.024 1.200 (R3 + R4)/(R3 − R4) −0.727 −0.605 −1.088 (R5 + R6)/(R5− R6) 0.987 −63.208 −14.944 (R7 + R8)/(R7 − R8) −138.285 2.785 5.466(R9 + R10)/(R9 − R10) 1.105 1.235 1.387 (R11 + R12)/(R11 − R12) 4.8714.444 2.750 (R13 + R14)/(R13 − R14) 1.721 1.578 1.812 f1/f −2.200 −3.041−1.480 f2/f 1.567 1.217 1.015 f3/f −6.184 20.479 3.641 f4/f 23.804−2.886 −5.342 f5/f 0.496 0.525 0.577 f6/f −6.881 −6.652 −3.560 f7/f−0.688 −0.700 −0.891 d1 0.180 0.180 0.180 d3 0.636 0.575 0.532 d5 0.3040.304 0.304 d7 0.516 0.480 0.289 d9 1.049 1.049 1.049 d11 0.444 0.5160.220 d13 0.393 0.374 0.567 Fno 2.073 2.050 2.050 TTL 5.747 5.727 5.363d7/TTL 0.090 0.084 0.054 n1 1.6713 1.6713 1.6713 n2 1.5445 1.5445 1.5445n3 1.6713 1.6713 1.6713 n4 1.7225 1.8211 1.7225 n5 1.5352 1.5352 1.5352n6 1.5352 1.5352 1.5352 n7 1.5352 1.5352 1.5352

It is to be understood, however, that even though numerouscharacteristics and advantages of the present exemplary embodiments havebeen set forth in the foregoing description, together with details ofthe structures and functions of the embodiments, the disclosure isillustrative only, and changes may be made in detail, especially inmatters of shape, size, and arrangement of parts within the principlesof the invention to the full extent indicated by the broad generalmeaning of the terms where the appended claims are expressed.

What is claimed is:
 1. A camera optical lens comprising, from an objectside to an image side in sequence: a first lens, a second lens, a thirdlens, a fourth lens, a fifth lens, a sixth lens and a seventh lens; thecamera optical lens further satisfies the following conditions:−3≤f1/f≤−1;1.7≤n4≤2.2;1≤f6/f7≤10;1.2≤(R1+R2)/(R1−R2)≤10;0.01≤d7/TTL≤0.2; where f: the focal length of the camera optical lens;f1: the focal length of the first lens; f6: the focal length of thesixth lens; f7: the focal length of the seventh lens; n4: the refractivepower of the fourth lens; R1: curvature radius of object side surface ofthe first lens; R2: the curvature radius of image side surface of thefirst lens; d7: the thickness on-axis of the fourth lens; TTL: the totaloptical length of the camera optical lens.
 2. The camera optical lens asdescribed in claim 1, wherein the first lens is made of plasticmaterial, the second lens is made of plastic material, the third lens ismade of plastic material, the fourth lens is made of glass material, thefifth lens is made of plastic material, the sixth lens is made ofplastic material, the seventh lens is made of plastic material.
 3. Thecamera optical lens as described in claim 1, wherein first lens has anegative refractive power with a convex object side surface and aconcave image side surface; the camera optical lens further satisfiesthe following conditions:0.09≤d1≤0.27; where d1: the thickness on-axis of the first lens.
 4. Thecamera optical lens as described in claim 1, wherein the second lens hasa positive refractive power with a convex object side surface and aconvex image side surface; the camera optical lens further satisfies thefollowing conditions:0.51≤f2/f≤2.35;−2.18≤(R3+R4)/(R3−R4)≤−0.40;0.27≤d3≤0.95; where f: the focal length of the camera optical lens; f2:the focal length of the second lens; R3: the curvature radius of theobject side surface of the second lens; R4: the curvature radius of theimage side surface of the second lens; d3: the thickness on-axis of thesecond lens.
 5. The camera optical lens as described in claim 1, whereinthe third lens has a concave image side surface; wherein the cameraoptical lens further satisfies the following conditions:−12.37≤f3/f≤30.72;−126.42≤(R5+R6)/(R5−R6)≤1.48;0.15≤d5≤0.46; where f: the focal length of the camera optical lens; f3:the focal length of the third lens; R5: the curvature radius of theobject side surface of the third lens; R6: the curvature radius of theimage side surface of the third lens; d5: the thickness on-axis of thethird lens.
 6. The camera optical lens as described in claim 1, whereinthe fourth lens has a convex object side surface and a concave imageside surface; the camera optical lens further satisfies the followingconditions:−10.68≤f4/f≤35.71;−276.57≤(R7+R8)/(R7−R8)≤8.2;0.14≤d7≤0.77; where f: the focal length of the camera optical lens; f4:the focal length of the fourth lens; R7: the curvature radius of theobject side surface of the fourth lens; R8: the curvature radius of theimage side surface of the fourth lens; d7: the thickness on-axis of thefourth lens.
 7. The camera optical lens as described in claim 1, whereinthe fifth lens has a positive refractive power with a concave objectside surface and a convex image side surface; the camera optical lensfurther satisfies the following conditions:0.25≤f5/f≤0.87;0.55≤(R9+R10)/(R9−R10)≤2.08;0.52≤d9≤1.57; where f: the focal length of the camera optical lens; f5:the focal length of the fifth lens; R9: the curvature radius of theobject side surface of the fifth lens; R10: the curvature radius of theimage side surface of the fifth lens; d9: the thickness on-axis of thefifth lens.
 8. The camera optical lens as described in claim 1, whereinthe sixth lens has a negative refractive power with a convex object sidesurface and a concave image side surface; the camera optical lensfurther satisfies the following conditions:−13.76≤f6/f≤−2.37;1.38≤(R11+R12)/(R11−R12)≤7.31;0.11≤d11≤0.77; where f: the focal length of the camera optical lens; f6:the focal length of the sixth lens; R11: the curvature radius of theobject side surface of the sixth lens; R12: the curvature radius of theimage side surface of the sixth lens; d11: the thickness on-axis of thesixth lens.
 9. The camera optical lens as described in claim 1, whereinthe seventh lens has a negative refractive power with a convex objectside surface and a concave image side surface; the camera optical lensfurther satisfies the following conditions:0.79≤(R13+R14)/(R13−R14)≤2.72;−1.78≤f7/f≤−0.46;0.19≤d13≤0.85; where f: the focal length of the camera optical lens; f7:the focal length of the seventh lens; d13: the thickness on-axis of theseventh lens; R13: the curvature radius of the object side surface ofthe seventh lens; R14: the curvature radius of the image side surface ofthe seventh lens.
 10. The camera optical lens as described in claim 1,wherein the total optical length TTL of the camera optical lens is lessthan or equal to 6.32 mm.
 11. The camera optical lens as described inclaim 1, wherein the aperture F number of the camera optical lens isless than or equal to 2.14.